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    <meta charset="UTF-8">
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    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
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<body>
    
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<script>
    
let obj = {
    name:"张三",
    age:20
}

let newObj = new Proxy(obj,{
    get(target,key){
        console.log("get");
        return target[key];
    },
    set(target,key,newValue){
        console.log("set",newValue);
        target[key] =  newValue;
        
    }
})
// newObj.name;
// newObj.name = "李四";



</script>
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